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Geomechanical Properties of the Carboniferous Middle Coal Measures: Influence on fracture fluid flow and frictional stability during geothermal utilisation (UKGEOS Glasgow)

UKGEOS and Core Sample Analysis. Geomechanical testing was performed to determine triaxial compressional strength, tensile strength, frictional strength and permeability of sandstones, siltstones, mudstones and coals from eleven depth intervals within the GGC01 borehole, UK Geoenergy Observatories (UKGEOS), Glasgow, United Kingdom. Frictional strength tests were also performed on cuttings samples of sandstones, siltstones, mudstones and coals from the GGA08 borehole, Glasgow, United Kingdom. In total twenty-three tensile strength tests were performed on ten sampled intervals, and seven porosity measurements pre-and post-failure were taken. Nine triaxial compressive strength tests and twenty-one frictional strength tests were performed, with permeability measured both before and after failure or shear respectively. From compressive strength tests we also determined the Young’s modulus and Poisson’s ratio. Results of X-Ray Diffraction are also included in the dataset.

Simple

Date (Publication)
2021-10-03
Citation identifier
http://data.bgs.ac.uk/id/dataHolding/13607611
Point of contact
Organisation name Individual name Electronic mail address Role

University of Liverpool

Steven Beynon

not available

Originator

British Geological Survey

Enquiries

not available

Distributor

British Geological Survey

Enquiries

not available

Point of contact
Maintenance and update frequency
Not planned

GEMET - INSPIRE themes, version 1.0

  • Geology

BGS Thesaurus of Geosciences

  • Geomechanics

  • Mudstone

  • Abrasion

  • Compressive strength

  • Core sampling

  • Sampling

  • Sample analysis

  • Friction (geomechanics)

  • Tensile strength

  • Fluid flow

  • Siltstone

  • Carboniferous

  • Drilling

  • Fracture analysis

  • Boreholes

  • Scottish SDI

  • Permeability

  • Sandstone

  • UK Location (INSPIRE)

  • Coal

dataCentre
  • UK Location (INSPIRE)
  • Scottish SDI
  • UKGEOS
Keywords
  • NERC_DDC

Access constraints
Other restrictions
Other constraints
licenceOGL
Other constraints
Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"
Use constraints
Other restrictions
Other constraints

The copyright of materials derived from the British Geological Survey's work is vested in the Natural Environment Research Council [NERC]. No part of this work may be reproduced or transmitted in any form or by any means, or stored in a retrieval system of any nature, without the prior permission of the copyright holder, via the BGS Intellectual Property Rights Manager. Use by customers of information provided by the BGS, is at the customer's own risk. In view of the disparate sources of information at BGS's disposal, including such material donated to BGS, that BGS accepts in good faith as being accurate, the Natural Environment Research Council (NERC) gives no warranty, expressed or implied, as to the quality or accuracy of the information supplied, or to the information's suitability for any use. NERC/BGS accepts no liability whatever in respect of loss, damage, injury or other occurence however caused.

Other constraints

Available under the Open Government Licence subject to the following acknowledgement accompanying the reproduced NERC materials "Contains NERC materials ©NERC [year]"

Spatial representation type
Grid
Language
English
Topic category
  • Geoscientific information
Geographic identifier
Glasgow [id=1298677]

British Geological Survey Gazetteer: OS gazetteer 2002 revision

N
S
E
W
thumbnail




Begin date
2019-12-02
End date
2020-02-28

Vertical extent

Minimum value
0.0000
Maximum value
199.0000

Vertical datum

No information provided.
Supplemental Information

For more information on the project, visit www.ukgeos.ac.uk.

Unique resource identifier
OSGB 1936 / British National Grid (EPSG::27700)
Distribution format
Name Version

pdf

Distributor contact
Organisation name Individual name Electronic mail address Role

British Geological Survey

Enquiries

not available

Distributor
OnLine resource
Protocol Linkage Name
https://www.bgs.ac.uk/services/ngdc/accessions/index.html#item134006
Hierarchy level
Dataset
Other

dataset

Conformance result

Title

INSPIRE Implementing rules laying down technical arrangements for the interoperability and harmonisation of Geology

Date (Publication)
2011
Explanation

See the referenced specification

Pass
No

Conformance result

Title

Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services

Date (Publication)
2010-12-08
Explanation

See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF

Pass
No
Statement

20mm x 40-70mm core plugs sampled from the GGC01 borehole were used for geomechanical testing in University of Liverpool's Rock Deformation Laboratory. All fabrics observed were sub-perpendicular to the drillcore axis so that maximum compressive stress in triaxial tests and tensile strengths are measured at 90° to these fabrics. Porosity was measured prior to testing using a helium pycnometer. In compressional experiments, cores were tested in a triaxial deformation apparatus. Samples were saturated with pore fluid at 2.5MPa and confining pressures were held at 6MPa. Permability was determined using the pulse-transient method. Tensile strength was measured on rock discs via a Brazilian test jig in a uniaxial press. Spare material was crushed to <125 microns and sheared between two porous metal plates to determine frictional strength. Crushed material was also used for XRD analyses.

Metadata

File identifier
a55d462e-b650-3bec-e054-002128a47908 XML
Metadata language
English
Hierarchy level
Dataset
Date stamp
2025-05-08
Metadata standard name
UK GEMINI
Metadata standard version

2.3

Metadata author
Organisation name Individual name Electronic mail address Role

British Geological Survey

enquiries@bgs.ac.uk

Point of contact
Dataset URI

http://data.bgs.ac.uk/id/dataHolding/13607611

 
 

Overviews

overview

Spatial extent

thumbnail

Keywords

Scottish SDI UK Location (INSPIRE) UKGEOS


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